"Vicki is not at all concerned about her former boyfriend writing a book," Gunvalson's rep said. "He can write whatever he wants except he cannot write about Vicki, her career, family or anything else concerning her."

"Vicki long ago had the boyfriend sign a fiercely written and executed confidentiality agreement," the rep explained. "He cannot write about her at all. That was signed in the very beginning [of their relationship]."

Ayers told Page Six he hopes the memoir will clear his name following speculation he is faking cancer.

Ayers blames "The Real Housewives" producers and Gunvalson's daughter Brianna Culberson for the rumors and wants "to expose" their role in the drama.

"They basically pitched me as this poor guy from Mississippi preying on a vulnerable, successful, self-made woman," he said. "I'm not bound contractually by anything to not share the intel about what transpires behind production."

"I'm not doing this because [Vicki] did it to me, but she's a grown woman and she's making business decisions to continue earning money," he added. "I'm a grown man and I want to do what I can to rehab my reputation ... and you can't do it on reality TV."

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Gunvalson and Ayers dated four years before breaking up in August.

The 53-year-old was initially positive about her ex-boyfriend despite the split, but vowed to never speak to him again after Ayers admitted to faking medical documents in November.